Furnace Installation Phoenix | 10-Year Warranty | Free Estimate

Furnace installers in phoenix, az

Get your furnace installation done right: Our EPA certified HVAC technicians will find the most efficient furnace model for your home and budget. We ensure peace of mind with your new furnace through our ‘Your Comfort Or We Make It Right’-Guarantee.


» transparent estimates

»  100% customer satisfaction

»  we offer convenient financing

A photo of a successful furnace installation in phoenix arizona

How we get your furnace installation done right

1. Assessing Customers Needs

We assess your needs to guarantee installing a new furnace that makes your home a comfortable oasis during the colder months in Phoenix.

2. Analyzing Current Installation

We analyze the current furnace installation -from duct work issues to air distribution - making sure we address current issues in the installation process of your new furnace.

3. Custom-tailoring Solution

We will include you into the decision making process by presenting a custom-tailored solution & estimate that takes your needs and current issues into consideration.

4. Installing New Furnace

We start installing your new furnace as soon as 24 hours after approving the estimate. Our installs come with a 2 year labor and 10 year parts warranty.

4+ Decades Of Experience

Comfort One serves as Phoenixs go-to furnace installation service with over 4 decades of combined experience.

530+ HVAC Systems Installed

With over 530 HVAC systems installed, we're prepared to deliver custom-tailored quality solutions fast.

2,100+ Happy Customers

As an expert in furnace installation, we are here for you when you need us. Ready to serve your families comfort and safety.

the cost of Furnace installation in Phoenix

Trane - Brands we install
Carrier - Brands we install
Lennox - Brands we install
Coleman - Brands we install
York - Brands we install
Goodman - Brands we install

Average Cost for Furnace Installation in phoenix

Based on furnace installations we have completed in the Phoenix area, the average costs are


Lower spectrum: $6,000

Average costs: $14,000

High spectrum: $23,000

Variables for Furnace installation costs

Based on all furnace installations we have fulfilled, these are the 4 main variables that will influence the cost:

  1. AFUE Rating
  2. Furnace size
  3. Comfort Features
  4. Installation Difficulties

1. AFUE Rating

AFUE is your furnace’s efficiency rating. Think of it like miles-per-gallon for your heating system. The higher the AFUE, the more of your fuel actually turns into heat, and the less you waste. A more efficient furnace usually costs more upfront but saves you money on heating bills in the long run.


Finding the right AFUE depends on your home, budget, and local regulations. Don’t stress about figuring it out on your own! An HVAC professional can assess your needs and recommend the best AFUE to keep you warm and your energy bills under control.

2. Furnace Size

Picking a furnace isn’t about choosing the biggest one! Size is measured in BTUs, which tells you how much heat it puts out. However, a pro needs to do a special calculation (“load calculation”) to figure out the right size for your specific home. Getting this wrong leads to problems: a furnace that’s too big will waste money and break down faster, while a too-small one won’t keep you warm and will drive up your energy bills.


A lot of houses already have the wrong size furnace because some installers skip that calculation step. The bottom line? Always insist on a proper calculation to get a furnace that’s the perfect fit. It might feel like extra work upfront, but it saves you a lot of trouble later on!

3. Comfort Features

Not all furnaces are created equal! Some models have extra features that boost comfort but also increase the price tag. These include things like

  • variable speed blowers (for more precise temperature control)
  • modulating heat stages (for better efficiency)
  • and smart thermostats (for scheduling and remote control)

Whether these upgrades are worth it depends on your budget and priorities. If consistent comfort and lower energy bills are important to you, the extra cost might make sense. An HVAC pro from Comfort One can help you weigh the pros and cons based on your needs.

4. Installation Difficulties

The trickier your furnace install is, the higher the cost will likely be. Here’s what makes a furnace installation more complex:

  • Problem ductwork: If your ducts are leaky or dirty, that may need fixing alongside the furnace replacement.
  • Awkward location: Tight attics or basements mean more labor time for the technicians.
  • Fuel switch: Going from electric to gas involves more work and potentially new materials.

It’s best to get a thorough assessment upfront so you’re prepared for the total cost and can compare quotes accurately! Schedule a free onsite estimate with us today!

American Quality Parts & Service

Excellence is a hallmark of American parts & service. As an owner-managed and operated business, we embody this through cleanliness, reliability & our highly trained HVAC technicians, who use American-made parts with unmatched durability and performance.

Our Technicians Are Commission-Free

Our humbly confident HVAC technicians are paid by the hour rather than by commissions. This ensures that they're focused on delivering unparalleled service, rather than upselling products.

We Are On Time, Every Time!

We understand that your time is valuable, and we respect it. Whether you receive a phone update or a text message letting you know our HVAC technician is en route, you can be confident that when we say 1-2 o'clock, we're aiming for 1.

We Have Honest Warranties

At Comfort One, we believe that a warranty should be straightforward and genuine. We offer only product and labor warranties. With us, you'll never be trapped into paying for extra HVAC services just to ensure your warranty remains valid.

Signs it might be time for a new furnace

1. Age of your furnace

In our experience, most furnace in Phoenix stay reliable for about 20 years. If your furnace is over 20 years old, it’s likely nearing the end of its lifespan and might require expensive repairs.

2. Constant Repairs

Frequent breakdowns, especially costly ones like a heat exchanger replacement (up to $5,500) signal it may be more economical to get a new furnace instead of fixing the old.

3. Rising Energy Bills

Rising energy bills are a good indicator for the health of your furnace. A furnace with a short lifespan will drive up your heating costs due to inefficiencies.

4. Uneven Heating

Does your house have cold spots, or does the furnace struggle to keep up on very cold days? That’s a sign of a system on its last legs.

Get Your Furnace Installation In 3 Simple Steps

1. Schedule Estimate

Upon initial contact, we promptly schedule a first visit to meet in person, get to know each other & get you a detailed estimate.

2. Needs Assessment & Estimate

Upon arrival our EPA certified technician will find out about your needs & current system. After analyzing the status quo, he will present you with the most efficient furnace for your home and budget.

3. Post Installation Follow-Up

Post-furnace-installation, we initiate a dedicated follow-up, either through a walk-through or a post-service call, to guarantee full customer satisfaction and tend to any residual concerns.

Efficiency and costs compared: Single-Stage vs. Two-Stage vs. Variable-Speed Furnaces

1. Single-stage furnace

1.1. Efficiency:

Single-stage furnaces are relatively less efficient compared to their multi-stage counterparts. Because they operate at one consistent speed, they may end up running at full capacity even when lesser heating is required, consuming more energy than necessary.

1.2. Costs:

The initial cost of a single-stage furnace is quite affordable, making it an attractive option for budget-conscious homeowners. However, the lack of energy-saving features means higher long-term utility bills.

1.3. Best Suited For:

  • Smaller homes
  • Milder climates
  • Homeowners seeking an affordable, straightforward solution

2. Two-stage furnace

2.1. Efficiency:

Two-stage furnaces offer better efficiency than single-stage systems. Their ability to operate at half or full speed depending on the heating needs allows them to be more energy-conservative.

2.2. Costs:

While two-stage furnaces come at a higher initial cost, they usually pay off in the form of reduced utility bills due to their more efficient operation.

2.3. Best Suited For:

  • Medium to large homes
  • Climates with variable temperatures
  • Homeowners seeking a balanced mix of affordability and efficiency

3. Variable-speed furnace

3.1. Efficiency:

Variable-speed furnaces offer the highest efficiency among the three types. These systems adapt to both indoor and outdoor temperatures, ensuring that your heating needs are met without consuming excessive energy.

3.2. Costs:

The upfront cost of a variable-speed furnace is the highest. However, the ultra-efficient operation usually results in significant long-term savings on utility bills, making it a wise investment for the future.

3.3. Best Suited For:

  • Larger homes with complex layouts
  • Extreme climates
  • Homeowners willing to invest in the highest efficiency and comfort

Enjoy Peace of Mind With Our 'Your comfort or we will make it right'-Guarantee

At Comfort One, your satisfaction is our top priority. Every service and estimate we provide is clear and transparent, ensuring you’re always in the loop. We tailor our recommendations to fit your needs and budget. If anything doesn’t feel right, just remember our “Your Comfort Or We Will Make It Right” guarantee. We aim to exceed your expectations every time, ensuring you always feel valued and cared for. 100% satisfaction is our commitment to you.

Tapani Ojalehto, Owner of Comfort One Air Conditioning LLC is following up on a new gas furnace and gas furnace installation in Phoenix Arizona

Financing your furnace installation: What you need to know

Why financing?

Installing a new furnace involves various costs, including the price of the unit itself, labor, and any additional materials or modifications needed for the installation. While some can pay for these costs outright, financing provides another pathway to achieve your comfort needs without straining your budget.

Our partnership with Synchrony

As part of our dedication to integrity, transparency, and 100% customer satisfaction, we’ve partnered with Synchrony, a premier consumer financial services company. Together, we offer financing solutions tailored to your specific needs. Whether you need short-term or long-term financing, our partnership with Synchrony ensures you get flexible terms and competitive interest rates.

Benefits of financing through Comfort One and Synchrony

1. Access to premium furnaces

Financing allows you to invest in a higher-quality, more efficient furnace without the upfront cost, which could save you money on energy bills in the long run.

2. Flexible terms

Our financing options through Synchrony offer various repayment terms, allowing you to select one that aligns with your financial situation.

3. Quick approval

The quick and easy application process means you can get your new furnace installed promptly, ensuring your comfort is restored in no time.

4. Credit score

On-time repayments will reflect positively on your credit history, benefiting you in the long run.

Frequently asked questions about furnace installation in Phoenix

Phoenix is known for its hot summers, but the winters can be quite chilly too. A two-stage or variable-speed furnace is generally recommended for our climate, as these systems can adapt to the varying temperatures more efficiently.

The cost varies depending on several factors, such as the type of furnace, the complexity of installation, and whether new ductwork is required. Contact us for a detailed estimate tailored to your specific needs.

Typical furnace installations usually take between 4 to 8 hours. However, more complex installations, which may involve ductwork alterations or other modifications, can take longer.

If your furnace is over 15-20 years old, requires frequent repairs, or is causing your energy bills to spike, it may be time for a new furnace installation.

We do offer financing options to help make your investment more manageable. Please contact us to discuss the various plans we have available.

AFUE stands for Annual Fuel Utilization Efficiency. A higher AFUE percentage means the furnace converts a greater amount of fuel into heat, thus being more efficient. This is an important consideration for long-term costs.

Yes, we offer different warranty options depending on the type of furnace you choose. Our team will discuss these options with you in detail. Generally we offer 10 year parts warranty and a 2 year labor warranty on all new installations.

Regular maintenance is crucial for optimal performance. This usually includes filter changes, bi-annual inspections, and timely repairs.

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